Ballaarinta ion Alloy Kovar Wire Alloy-4J29
(Magaca guud: Kovar, Nilo K, KV-1, Dilver Po, Vacon 12)
Alloy-4J29 oo sidoo kale loo yaqaan Kovar alloy. Waxaa la hindisay si loo daboolo baahida loo qabo shaabad galaas-ilaa-birta ah oo la isku halleyn karo, taas oo looga baahan yahay aaladaha elektaroonigga ah sida nalalka iftiinka, tuubooyinka faakuumka, tuubooyinka fakuumka ee katooliga, iyo nidaamyada faakuumka ee kiimikada iyo cilmi-baarista kale ee sayniska. Biraha badankood kuma shaabadeyn karaan galaaska sababtoo ah isku-dhafka heerkulka ee expAN SIon ma aha mid la mid ah galaaska, sidaa darteed marka kala-goysyadu qaboojiyaan ka dib sameynta cadaadiska ay sabab u tahay kala duwanaanshaha heerarka expAN SIon ee galaaska iyo birta waxay sababaan in kala-goysyadu ay dillaacaan.
(-Kovar)
Kovar waa bir bir ah oo nickel-cobalt ah oo isku mid ah Fernico, oo loogu talagalay inuu la jaanqaado sifooyinka kuleylka ee SIon ee galaaska borosilicate (~5 × 10?6 /K inta u dhaxaysa 30 iyo 200 °C, ilaa ~10 × 10?6 /K at 800 °C) si loogu oggolaado isku xirnaanta farsamada tooska ah heerkul kala duwan. Waxay ka heshaa isticmaalka qalabka korontada ku shaqeeya ee galaya baqshadaha galaaska ee qaybaha elektarooniga ah sida tuubooyinka faakuumka (khaanadaha), tuubooyinka X-ray iyo microwave-ka iyo nalalka qaar.
Magaca Kovar waxaa badanaa loo isticmaalaa erey guud oo loogu talagalay walxaha Fe-Ni oo leh sifooyinkan gaarka ah ee kuleylka ee ExpAN SIon. Fiiro gaar ah u yeelo Invar-ka birta ee Fe-Ni kaas oo muujiya ugu yaraan ExpAN SIon-ka kulaylka.
Alloy-4J29 waxaa la hindisay si loo daboolo baahida loo qabo shaabad galaas-ilaa-birta ah oo la isku halleyn karo, taas oo looga baahan yahay aaladaha elektaroonigga ah sida nalalka iftiinka, tuubooyinka faakuumka, tuubooyinka fakuumka ee katooliga, iyo nidaamyada faakuumka ee kiimikada iyo cilmi-baarista kale ee sayniska. Biraha badankood kuma shaabadeyn karaan galaaska sababtoo ah isku-dhafka heerkulka ee ka-fogaanshaha SIon-ka ma aha mid la mid ah galaaska, sidaa darteed marka kala-goysyadu qaboojiyaan ka dib sameynta cadaadiska ay sabab u tahay kala duwanaanshaha heerarka kala-fogaanshaha SIon-ka ee galaaska iyo birta ayaa sababa in kala-goysku uu dillaaco.
Alloy-4J29 ma aha oo kaliya inuu leeyahay expAN SIon kuleyl oo la mid ah galaaska, laakiin qalooca kuleylka ee aan tooska ahayn ee exAN SIon badanaa waxaa loo samayn karaa inuu la mid noqdo galaas, taasoo u oggolaanaysa isku-xidhka inuu u dulqaato heerkul ballaaran. Kiimiko ahaan, wuxuu ku xidhmaa galaaska iyada oo loo marayo lakabka oksaydhka ee dhexdhexaadka ah ee nikkel oxide iyo cobalt oxide; saamiga oksaydhka birta ah waa hooseeyaa sababtoo ah hoos u dhaca uu la socdo kobalt. Xoogga isku xidhka ayaa aad ugu tiirsan dhumucda lakabka oksaydhka iyo dabeecadda. Joogitaanka kobalt wuxuu ka dhigayaa lakabka oksaydhka mid fudud in la dhalaaliyo oo lagu milmo galaaska dhalaalay. Midab cawlan, cawlan-buluug ama cawlan-bunni wuxuu muujinayaa shaabad wanaagsan. Midab bir ah wuxuu tilmaamayaa la'aanta oksaydhka, halka midabka madow uu tilmaamayo biraha oksaydhka badan, labada xaaladoodba wuxuu horseedaa kala-goyn daciif ah.
Waxaa inta badan loo isticmaalaa qaybaha faakuumka korontada iyo xakamaynta qiiqa, tuubada shoogga, tuubada shidista, magnetron galaas, TRAN SIstors, fiilo shaabad ah, relay, hogaamin wareegyo isku dhafan, chassis, brackets iyo shaabad kale oo guryaha lagu xidho.
Halabuurka caadiga ah%
| Ni | 28.5~29.5 | Fe | Bal. | Co | 16.8~17.8 | Si | ≤0.3 |
| Mo | ≤0.2 | Cu | ≤0.2 | Cr | ≤0.2 | Mn | ≤0.5 |
| C | ≤0.03 | P | ≤0.02 | S | ≤0.02 |
Xoogga Tijaabada, MPa
| Koodhka xaaladda | Xaalad | Silig | Xarigga |
| R | Jilicsan | ≤585 | ≤570 |
| 1/4I | 1/4 Adag | 585~725 | 520~630 |
| 1/2I | 1/2 Adag | 655~795 | 590~700 |
| 3/4I | 3/4 Adag | 725~860 | 600~770 |
| I | Adag | ≥850 | ≥700 |
Sifooyinka Jirka ee Caadiga ah
| Cufnaanta (g/cm3) | 8.2 |
| Iska caabinta korontada ee 20ºC (mm2/m) | 0.48 |
| Qodobka heerkulka iska caabbinta (20ºC ~ 100ºC)X10-5/ºC | 3.7~3.9 |
| Barta Curie Tc/ ºC | 430 |
| Modulus Lalab ah, E/ Gpa | 138 |
Isugeynta Expan SIon
| θ/ºC | α1/10-6ºC-1 | θ/ºC | α1/10-6ºC-1 |
| 20-60 | 7.8 | 20-500 | 6.2 |
| 20~100 | 6.4 | 20~550 | 7.1 |
| 20~200 | 5.9 | 20-600 | 7.8 |
| 20-300 | 5.3 | 20~700 | 9.2 |
| 20-400 | 5.1 | 20-800 | 10.2 |
| 20-450 | 5.3 | 20~900 | 11.4 |
Gudbinta kulaylka
| θ/ºC | 100 | 200 | 300 | 400 | 500 |
| λ/ W/(m*ºC) | 20.6 | 21.5 | 22.7 | 23.7 | 25.4 |
| Habka daaweynta kulaylka | |
| Daawaynta cadaadiska si loo yareeyo walbahaarka | Kuleyli ilaa 470 ~ 540ºC oo hay 1 ~ 2 saacadood. Qabow hoos. |
| baabi'inta | Ku jira faakiyuum ku kululeeya 750 ~ 900ºC |
| Waqtiga haynta | 14 daqiiqo ~ 1 saac. |
| Heerka qaboojinta | Lama qaboojin karo wax ka badan 10 ºC/daqiiqo ilaa 200 ºC |
Qaabka saadka
| Magaca Alloys | Nooca | Cabbirka | ||
| Daawaha-4J29 | Silig | D= 0.1~8mm | ||
| Daawaha-4J29 | Xarigga | W= 5~250mm | T= 0.1mm | |
| Daawaha-4J29 | Foorno | W= 10~100mm | T= 0.01~0.1 | |
| Daawaha-4J29 | Baar | Dia = 8~100mm | L= 50~1000 | |


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